CN107405954A - Pneumatic tire for heavy load - Google Patents
Pneumatic tire for heavy load Download PDFInfo
- Publication number
- CN107405954A CN107405954A CN201680014121.9A CN201680014121A CN107405954A CN 107405954 A CN107405954 A CN 107405954A CN 201680014121 A CN201680014121 A CN 201680014121A CN 107405954 A CN107405954 A CN 107405954A
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- CN
- China
- Prior art keywords
- belt
- tire
- cord
- heavy load
- radial direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
- B60C9/2006—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords consisting of steel cord plies only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0007—Reinforcements made of metallic elements, e.g. cords, yarns, filaments or fibres made from metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/28—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers characterised by the belt or breaker dimensions or curvature relative to carcass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2012—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers
- B60C2009/2016—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers comprising cords at an angle of 10 to 30 degrees to the circumferential direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2074—Physical properties or dimension of the belt cord
- B60C2009/2077—Diameters of the cords; Linear density thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/06—Tyres specially adapted for particular applications for heavy duty vehicles
- B60C2200/065—Tyres specially adapted for particular applications for heavy duty vehicles for construction vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The band beam portion (7) of Pneumatic tire for heavy load (1) has：Cross-level laminate (7A), wherein the bearing of trend of the cord of belt adjacent to each other in tire radial direction (R) is intersected with each other；And parallel layered product (7B), wherein the bearing of trend of the cord of belt adjacent to each other in tire radial direction (R) is substantially parallel to one another.In addition, parallel layered product (7B) be arranged on in beam portion (7) to meet i >=n/2 relation, wherein, n expressions are included in the total quantity with the belt (1B 6B) in beam portion (7), and i represents the sequence number for being located at the belt (4B) of the inner side of parallel layers laminate (7B) in tire radial direction (R) when being counted in tire radial direction (R) since inner side for belt (1B 6B).
Description
Technical field
The present invention relates to a kind of Pneumatic tire for heavy load.
Background technology
Suitable for heavy vehicle (for example, truck, bus and Construction traffic) Pneumatic tire for heavy load in hyperbar
Used with conditions of heavy load.Due to this reason, in order to strengthen Pneumatic tire for heavy load, the tread-rubber of fetus face is provided with
Including the band beam portion of multiple (for example, more than the 4) belts successively stacked.
The tread-rubber of fetus face is provided with the band beam of multiple (for example, more than 4) belts including overlieing one another
In this case, belt is possible to separate with the rubber near the belt in portion.Therefore, it is desirable to improve anti-band beam separation property
Energy.
It is to reduce the cord diameter for the cord being contained in belt for improving the anti-possibility measure with beam separating property.
However, the reduction of cord diameter makes the anti-cut degradation of Pneumatic tire for heavy load.
In consideration of it, the technology disclosed in patent document 1 has been proposed.The purpose of patent document 1 is to pass through
The description below makes anti-cut performance and anti-band beam separating property realize：Make each two belt adjacent to each other in each of which
Direction relative to each other on to equatorial plane tilt；And suitably setting be contained in cord in belt cord it is straight
Footpath.
Reference listing
Patent document
Patent document 1：The patent application publication of Japanese Unexamined the 2009-234297th
The content of the invention
Technical problem
However, if routine techniques relies only on the change of cord diameter, routine techniques makes anti-cut performance and anti-band
Beam separating property, which is realized, to be difficult to further improve.
In consideration of it, the purpose of the present invention is to obtain make anti-cut performance realize to enter with anti-band beam separating property
The improved Pneumatic tire for heavy load of one step.
Technical scheme
The Pneumatic tire for heavy load of the present invention includes：At least one carcass, its tire in each self-embedding a pair of bead portion
Ring-type extends between enclosing core；And with beam portion, it is arranged on the outside of carcass and is included in tire footpath in the radial direction in tire
At least five belts successively stacked on to direction, each belt cover more cords by using rubber and are made.In addition, band
Beam portion includes：Cross-level laminate, wherein the bearing of trend of cord in tire in the radial direction belt adjacent to each other that
This intersects；And parallel layered product, wherein the bearing of trend of the cord in tire in the radial direction belt adjacent to each other
It is substantially parallel to one another.In addition, it is arranged in a manner of the relation that parallel layered product is represented by meeting i >=n/2 in band beam portion, wherein n
Expression is included in the total quantity with the belt in beam portion, and i is represented in tire in the radial direction since inner side for included in band
It is located at the belt of the inner side of tire in the radial direction when belt in beam portion counts between the belt of parallel layered product
Sequence number.
Beneficial effects of the present invention
The present invention can obtain that realized with anti-band beam separating property in anti-cut performance can be further improved heavy
Load pneumatic tire.
Brief description of the drawings
Fig. 1 is that the solid of the half of the fetus face for the Pneumatic tire for heavy load for showing the first embodiment of the present invention is splitted
Figure.
Fig. 2 is a part for the half of the fetus face for the Pneumatic tire for heavy load for showing the first embodiment of the present invention
The sectional view of width.
Fig. 3 is that the solid of the half of the fetus face for the Pneumatic tire for heavy load for showing second embodiment of the present invention is splitted
Figure.
Fig. 4 is that the solid of the half of the fetus face for the Pneumatic tire for heavy load for showing third embodiment of the present invention is splitted
Figure.
Fig. 5 is a part for the half of the fetus face for the Pneumatic tire for heavy load for showing third embodiment of the present invention
The sectional view of width.
Embodiment
Referring to the drawings, it will thus provide the detailed description of embodiments of the present invention.Subsidiary one carries, in following multiple embodiments
Including identical part.Identical part is presented with like reference characters, and eliminates repeated description.
In addition, the structure of Pneumatic tire for heavy load is symmetrical relative to equatorial plane CL.In consideration of it, each accompanying drawing
The shape of the left-half of Pneumatic tire for heavy load is only shown, eliminates the shape of the right half part of Pneumatic tire for heavy load.By
In this reason, the shape of the left-half based on Pneumatic tire for heavy load is provided to description below.Subsidiary one carries, although below will
The description of the structure of the right half part of omission Pneumatic tire for heavy load, but the unshowned right half part of Pneumatic tire for heavy load
It is identical with the left-half structure of Pneumatic tire for heavy load.
(first embodiment)
Fig. 1 is the three-dimensional cutaway view of the Pneumatic tire for heavy load of present embodiment.Fig. 2 is the heavy duty of present embodiment with filling
The sectional view of the width of a part for the half of the fetus face of air filled tyre.In this respect, the width of Pneumatic tire for heavy load 1
The sectional view in direction refer to along extend on tire width direction W and tire radial direction R plane, i.e. with tire circumferential direction
The sectional view of the Pneumatic tire for heavy load 1 of plane interception orthogonal C.
The Pneumatic tire for heavy load 1 of present embodiment is used for heavy-duty vehicle, such as truck, bus and Construction traffic.
As shown in figure 1, Pneumatic tire for heavy load 1 includes：Bead part 3；The side of sidewall portion 4 continued from bead part 3；And prolong from side of sidewall portion 4
Continuous fetus face 5.
It should be noted that：Tire 1 is provided with a pair of bead portion 3；And it is wide in tire that this is respectively disposed at tire 1 to bead part 3
The both sides spent on the W of direction, inserted with equatorial plane CL between them.In addition, a pair of sidewalls portion 4 is each arranged to from this to tire
Circle portion 3 continues；And this is also respectively disposed at both sides of the tire 1 on tire width direction W to side of sidewall portion 4, they interleave
Enter to have equatorial plane CL.In addition, fetus face 5 is arranged at this to extending between side of sidewall portion 4.
Pneumatic tire for heavy load 1 also includes at least one carcass 6, its bead core 2 in each self-embedding a pair of bead portion 3
Between ring-type extend.The reinforced bead portion 3 of carcass 6, side of sidewall portion 4 and fetus face 5.Carcass 6 forms the bone of Pneumatic tire for heavy load 1
Frame.
It should be noted that in order to prevent gas leakage, can be in the inner surface setting liner (not shown) of carcass 6.
Although being not shown, this Pneumatic tire for heavy load 1 is arranged on wheel rim (standard rim).
Pay attention to, " standard rim " refers to that what is limited in JATMA (Japanese motor vehicle tire manufactures NAB National Association 0f Broadcasters) yearbook fits
With the specification wheel rim of size.Beyond Japan, term " standard rim " refers to the rule in suitable dimensions specified in following specifications
Model wheel rim.
Above-mentioned specification passes through the effective industrial specification restriction in the every country for manufacturing and using tire.For example, the U.S.
Specification be to be limited in " the Tire and Rim Association, Inc. publish yearbook ".The specification in Europe is in " European tyre and wheel rim skill
Limited in art organizational standard handbook ".
Bead part 3 is arranged to the form of the ring continued on tire circumferential direction C, and is covered by rubber.Bead part 3 be by
Pneumatic tire for heavy load 1 is fixed on the component of wheel rim.In the component for forming Pneumatic tire for heavy load 1, bead part 3 is in tire footpath
The most inner side of Pneumatic tire for heavy load 1 is arranged on to direction R.
In the present embodiment, each bead part 3 includes：The bead core 2 to be formed by the way that high-carbon steel wire is stopped up；With
And the bead-core 2a made of hard rubber.
Side of sidewall portion 4 is arranged to continue on tire circumferential direction C, and forms the side of the difference of Pneumatic tire for heavy load 1
Portion.Side of sidewall portion 4 is made up of sidewall rubber.
In addition, in the component for forming Pneumatic tire for heavy load 1, side of sidewall portion 4 is arranged on tyre bead on tire radial direction R
Outside portion 3.
Fetus face 5 is arranged to continue on tire circumferential direction C.Fetus face 5 is the component to form Pneumatic tire for heavy load 1
One of, it forms tyre surface earthed surface 5a, its outer peripheral face contact road surface.Fetus face 5 is made up of tread-rubber.In addition, fetus face 5
Including the predetermined tread contour being formed thereon.
In this respect, tyre surface earthed surface 5a is when Pneumatic tire for heavy load 1 is put in standard internal pressure and normal loading
The surface contacted with road surface of Pneumatic tire for heavy load 1 when on standard rim is installed on while Pneumatic tire for heavy load 1.At this
In the case of kind, width of the tyre surface earthed surface 5a on tire width direction W is the ground width TW of tyre surface.
Pay attention to, " standard internal pressure " is using wheel specified in JATMA (Japanese motor vehicle tire manufactures NAB National Association 0f Broadcasters) yearbook
The air pressure that the measuring method of tire limits.Beyond Japan, " standard internal pressure " be with above-mentioned specification specified in tire size measure
In air pressure corresponding to air pressure.
In addition, " normal loading " be with JATMA (Japanese motor vehicle tire manufacture NAB National Association 0f Broadcasters) yearbook specified in it is single
Load corresponding to the maximum load rating of wheel.Beyond Japan, " normal loading " is applicable specified in above-mentioned specification
The maximum load (maximum load rating) of the single tire of size.
In addition, the outside on the tire radial direction R of carcass 6 sets band beam portion 7.Band beam portion 7 is included in tire radially
At least five belts successively stacked on the R of direction, and each belt covers more cords by using rubber and is made.
When being applied internal pressure to Pneumatic tire for heavy load 1, band beam portion 7 is become by protrusion to play partly limitation carcass 6
The effect of the hoop of shape.With beam portion 7 suppression is additionally operable to because acting on the change of the load on Pneumatic tire for heavy load 1 and because heavy duty is used
The deformation of Pneumatic tire for heavy load 1 caused by the rotation of pneumatic tire 1, and for by absorb from road surface input impact and
Mitigate the impact.In addition, it is embedded in the tread-rubber of fetus face 5 with beam portion 7 and prolongs wherein on tire circumferential direction C
Stretch.
In the present embodiment, by stacking six belts, the i.e. heap from inside to outside on tire radial direction R in order
Folded first belt 1B, the second belt 2B, the 3rd belt 3B, the 4th belt 4B, the band beams of the 5th belt 5B and the 6th
Layer 6B and form band beam portion 7.
Specifically, in the present embodiment, between above-mentioned multiple belts, the first belt 1B is in tire radial direction
The most inner side of tire is placed on R.In addition, the second belt 2B is placed on the first belt 1B's on tire radial direction R
Outside.3rd belt 3B is placed on the second belt 2B outside on tire radial direction R.4th belt 4B is in tire
The 3rd belt 3B outside is placed on radial direction R.5th belt 5B is placed on the 4th band on tire radial direction R
Beam layer 4B outside.Between above-mentioned multiple belts, the 6th belt 6B is placed on tire most on tire radial direction R
Outside.
It should be noted that in each self-embedding belt 1B, 2B, 3B, 4B, 5B, 6B of cord 9a, 9b, 9c, 9d, 9e, 9f.Specifically,
More cord 9a, more cord 9b, more cord 9c, more cord 9d, more cord 9e and more are covered by using rubber
Cord 9f and each form stratiform belt 1B, 2B, 3B, 4B, 5B, 6B.
In addition, each freedom of cord 9b in cord 9a and the second belt 2B in the first belt 1B is to tire equator
The high-tensile steel cord that face CL extends while inclination is made.For example, the cord is with 1200N/mm2's
Steel cord of the tensile strength as its mechanical strength.
In addition, each freedom of cord 9d in cord 9c and the 4th belt 4B in the 3rd belt 3B is to tire equator
The high-tensile steel cord for the rubber coated that face CL extends while inclination is made.
In addition, each freedom of cord 9f in cord 9e and the 6th belt 6B in the 5th belt 5B is to tire equator
The high elongation steel cord for the rubber coated that face CL extends while inclination is made.The high elongation steel cord is with high drawing
The steel cord of characteristic, this allows more than 5~8% that it extends its total length before breaking.
In this case, the cord 9d in the cord 9c and the 4th belt 4B in the 3rd belt 3B is relative to tire
Equatorial plane CL angle of inclination is arranged to more relative than the cord 9b in the cord 9a in the first belt 1B and the second belt 2B
It is bigger in equatorial plane CL angle of inclination.
In other words, the cord 9b in the cord 9a and the second belt 2B in the first belt 1B is relative to equatorial plane
CL angle of inclination sets smaller.
Due to as described above, made of high-tensile steel cord cord 9a, 9b inclining relative to equatorial plane CL
Rake angle sets smaller, therefore the first belt 1B and the second belt 2B can bear the pulling force on tire circumferential direction C.
Therefore, when tire is filled with internal pressure, in tire load-bearing rotation or in other cases, the band beams of the first belt 1B and second
Layer 2B suppresses the diameter increase of fetus face 5.Therefore, tire shape can be kept.
Further, since cord 9a, 9b are embedded in the first belt 1B and the second belt made of high elongation steel cord
In 2B, therefore when tire grinds out-of-date while load-bearing rotation from thrust (such as stone), the first belt 1B and second
Belt 2B can prevent the 3rd belt 3B and the 4th belt 4B from deforming.Due to the first belt 1B and the second belt 2B
The 3rd belt 3B and the 4th belt 4B deformation are inhibited, therefore the 3rd belt 3B and the 4th belt 4B can be prevented
Rupture and damage, so as to improve the durability with beam portion 7.
As described above, the first belt 1B and the second belt 2B play the band beam of the Pneumatic tire for heavy load 1 full of gas
Effect, and for improve the durability with beam portion 7.
Further, since the cord 9d in cord 9c and the 4th belt 4B in the 3rd belt 3B is relative to tire equator
Face CL angle of inclination sets larger, therefore the 3rd belt 3B and the 4th belt 4B can suppress Pneumatic tire for heavy load
1 detrusion.
In addition, it can make tire while load-bearing rotation from thrust including the 3rd belt 3B and the 4th belt 4B
Out-of-date entrance power of the resistance from road surface is ground on (such as stone).Due to as described above, Pneumatic tire for heavy load 1 is configured to
It is enough to grind out-of-date entrance power of the resistance from road surface from thrust (such as stone) in Pneumatic tire for heavy load 1, therefore can be to prevent
Only Pneumatic tire for heavy load 1 is grinding out-of-date by the entrance power destruction from road surface from thrust (such as stone).Therefore, can be with
Improve the durability of Pneumatic tire for heavy load 1.
As described above, the 3rd belt 3B and the 4th belt 4B is used for the detrusion for suppressing Pneumatic tire for heavy load 1,
And for improving the durability of Pneumatic tire for heavy load 1.
Meanwhile as described above, it is easy in cord 9e, 9f insertion the 5th belt 5B and the 6th belt 6B of elongation.This
The 5th belt 5B and the 6th belt 6B is allowed to grind out-of-date from thrust (such as stone) while tire load-bearing rotation
Change their shape according to the entrance power from the thrust, while ensureing enough resistance type power.Therefore, this can
To suppress the 3rd belt 3B and the 4th belt 4B excessive deformation, and prevent the 3rd belt 3B and the 4th belt 4B
Cord 9c, 9d rupture and damage in the 3rd belt 3B being likely to occur during excessive deformation and the 4th belt 4B.With this
Mode, the 5th belt 5B and the 6th belt 6B play a part of protecting belt.Include the in band beam portion 7 like this
Five belt 5B and the 6th belt 6B can further improve the durability of Pneumatic tire for heavy load 1.
It should be noted that in the present embodiment, the cord diameter of at least one cord is different from the cord diameter of other cords.
In other words, the cord different from the cord diameter of other cords is embedded in the first belt 1B into the 6th belt 6B
At least one belt in.
By this way, in the present embodiment, the different multiple belts of cord diameter are included with beam portion 7.
Specifically, the first belt 1B to the 6th belt 6B is made using three kinds of different cords of cord diameter each other.
First, in the maximum each belt 3B of self-embedding the 3rd and the 4th belt 4B of cord 9c, 9d of cord diameter.Cause
This, the 3rd belt 3B and the 4th belt 4B are most thick belts.
In addition, in cord 9e, 9f insertion the 5th belt 5B and the 6th belt 6B of cord diameter minimum.Therefore,
Five belt 5B and the 6th belt 6B are most thin belts.
In addition, in cord 9a, 9b insertion the first belt 1B and the second belt 2B with medium cord diameter.Cause
This, the first belt 1B and the second belt 2B are the belts of intermediate gauge.
Grind out-of-date from thrust in Pneumatic tire for heavy load 1, for the cord diameter between the cord of belt to be made
This species diversity belt can be made effectively to prevent various big or small thrusts (such as stone) to be pierced into heavy duty pneumatics
Tire 1.
For example, because cord diameter minimum cord 9e, 9f are embedded in the 5th belt 5B and the 6th belt 6B, therefore
Space narrows between densely embedded cord 9e, 9f can make cord in belt respectively.Space narrows like this between cord
Belt can more efficiently prevent from less thrust and be pierced into tire.
Meanwhile the larger belt of cord diameter can more efficiently prevent from larger thrust and be pierced into tire.
It should be noted that the species of different cord diameters is not limited to 3 kinds, can be 2 kinds, 4 kinds or more.
In addition, in the present embodiment, the width of the first belt 1B and the second belt 2B on tire width direction W
Width W2s of the W1 than the 3rd belt 3B on tire width direction W is smaller.
Due to as described above, the width W1 ratios of the first belt 1B and the second belt 2B on tire width direction W
Width W2s of the three belt 3B on width W is smaller, therefore can reduce the shear strain occurred during tire load-bearing rotation.
The reduction of the shear strain occurred during tire load-bearing rotation can suppress the first belt 1B and the second belt 2B is wide in tire
End 8 on degree direction W separates with the rubber near the end 8.It is thus possible to improve the durability of Pneumatic tire for heavy load 1.
Meanwhile in such Pneumatic tire for heavy load 1, the first belt 1B and the second belt 2B cord 9a, 9b
Cord diameter preferably the 3rd belt 3B and the 4th belt 4B cord 9c, 9d cord diameter 65%-95%
In the range of, more preferably in the range of 70%-90%.
It is less than the 3rd belt 3B and the in the first belt 1B and the second belt 2B cord 9a, 9b cord diameter
In the case of the 65% of four belt 4B cord 9c, 9d cord diameter, the first belt 1B and the second belt 2B's is firm
Property deficiency.This makes cord 9a, 9b become easily to rupture and damage because of the entrance power (such as stone) from road surface, so as to reduce
First belt 1B and the second belt 2B durability.
On the other hand, it is more than the 3rd band in the first belt 1B and the second belt 2B cord 9a, 9b cord diameter
In the case of the 95% of beam layer 3B and the 4th belt 4B cord 9c, 9d cord diameter, the first belt 1B and the second band
Beam layer 2B cord 9a, 9b cord diameter are too big.This makes the first belt 1B and the second belt 2B tire width direction
End 8 is more likely to separate with the rubber near the tire width direction end 8.
For these reasons, the preferred value of the first belt 1B and the second belt 2B cord 9a, 9b cord diameter
It is arranged in the range of the 65%-95% of the 3rd belt 3B and the 4th belt 4B cord 9c, 9d cord diameter.So
Cord diameter can make to prevent the first belt 1B and the second belt 2B tire width direction end 8 and the tyre width
The resistance and the first belt 1B and the second belt 2B durability of rubber separation near direction end 8 are real
It is existing.Therefore, the durability of Pneumatic tire for heavy load 1 can more be improved.
Meanwhile first belt 1B and the second belt 2B breaking strength preferably the 3rd belt 3B and the 4th band beam
In the range of the 60% to 110% of layer 4B breaking strength, more preferably in the range of 60%-90%.
It is less than the 3rd belt 3B and the 4th belt 4B in the first belt 1B and the second belt 2B breaking strength
Breaking strength 60% in the case of, the first belt 1B and the second belt 2B breaking strength deficiency.In tire load-bearing
Grind out-of-date from thrust (such as stone) while rotation, even if the 3rd belt 3B and the 4th belt 4B cord 9c,
9d is not staved or damaged by the entrance power from the thrust, the first belt 1B and the second belt 2B rigid deficiency
The first belt 1B and the second belt 2B cord 9a, 9b can be made to be more likely to be staved by the entrance power from the thrust
And damage.
On the other hand, in the first belt 1B and the second belt 2B belt 3B of breaking strength ratio the 3rd and the 4th band
In the case that the 110% of beam layer 4B breaking strength is bigger, the first belt 1B and the second belt 2B breaking strength are too big.
Grind out-of-date from thrust while tire load-bearing rotation, the first belt 1B and this too big of the second belt 2B resist
Disconnected intensity can effectively prevent the first belt 1B and the second belt 2B cord 9a, 9b by the entrance power from thrust
Stave and damage.However, when the first belt 1B and the second belt 2B are subjected to detrusion, the first belt 1B and second
Belt 2B this too big breaking strength makes excessive stress concentration in the first belt 1B and the second belt 2B wheel
On tire width end 8.This improves following possibilities：First belt 1B and the second belt 2B tire width direction
End 8 separates with the rubber near the tire width direction end 8；And the durability of Pneumatic tire for heavy load reduces.
For these reasons, preferably the first belt 1B and the second belt 2B breaking strength in the 3rd belt 3B and
In the range of the 60% to 110% of 4th belt 4B breaking strength.Such breaking strength can make resistance first band beam
The property that layer 1B and the second belt 2B tire width direction end 8 separates with the rubber near the tire width direction end 8
Energy and the first belt 1B and the second belt 2B durability are realized.Therefore, heavy duty pneumatic can more be improved
The durability of tire 1.
In addition, cord 9a, 9b included in the first belt 1B and the second belt 2B are at an angle to tire
Equatorial plane CL is tilted, preferably in the range of 4 ° to 10 °, more preferably in the range of 4 ° to 7 °.
It is red to tire with the angle less than 4 ° in cord 9a, 9b included in the first belt 1B and the second belt 2B
In the case of road face CL is inclined, cord 9a, 9b are too small to the inclined angles of equatorial plane CL.Although the first belt 1B and
Two belt 2B can：Fully bear the pulling force on tire circumferential direction C；So as to suppress the increase of the diameter of fetus face 5；Therefore protect
Tire shape is held, but the too small angle of inclination makes shear strain excessive in tire load-bearing rotation.In tire load-bearing rotation
When the too big shear strain that occurs make excessive stress concentration in the first belt 1B and the second belt 2B tyre width
On direction end 8.This improves following possibilities：First belt 1B and the second belt 2B tire width direction end 8
Separated with the rubber near the tire width direction end 8；And the durability of Pneumatic tire for heavy load 1 reduces.
On the other hand, in cord 9a, 9b included in the first belt 1B and the second belt 2B with the angle more than 10 °
Spend to equatorial plane CL it is inclined in the case of, cord 9a, 9b are too big to the inclined angles of equatorial plane CL.It is this too big
The possibility that angle of inclination adds is that the first belt 1B and the second belt 2B can not be fully born on tire circumferential direction C
Pulling force, therefore allow the diameter of fetus face 5 excessively to increase, so that tire shape can not be kept.
For these reasons, cord 9a, the 9b preferably being contained in the first belt 1B and the second belt 2B with 4 ° extremely
Angle in the range of 10 ° tilts to equatorial plane CL.Such angle of inclination can be while tire shape be kept more
The durability of Pneumatic tire for heavy load 1 is improved more.
In addition, the width W1 of the first belt 1B and the second belt 2B on tire width direction W is preferably wide in ground connection
Spend in the range of the 34% to 63% of TW, more preferably in the range of the 41% to 56% of ground width TW.
In the width W1 of the first belt 1B and the second belt 2B on tire width direction W less than ground width TW's
In the case of 34%, placement the first belt 1B and the second belt 2B region is too small, and the first belt 1B and second
The scope that belt 2B can bear the pulling force on tire circumferential direction C is too limited.First belt 1B and the second band
This scope being too limited that beam layer 2B can bear the pulling force on tire circumferential direction C adds following possibilities：
The increased region of the diameter that can not suppress fetus face 5 of fetus face is too big；Therefore tire shape can not be kept.
On the other hand, the width W1 in the first belt 1B and the second belt 2B on tire width direction W, which is more than, connects
In the case of the 63% of ground width TW, the shear strain in tire load-bearing rotation in the first belt 1B and the second belt 2B
It is too big.In tire load-bearing rotation, this too big shear strain makes excessive answer in the first belt 1B and the second belt 2B
Power is concentrated on the first belt 1B and the second belt 2B tire width direction end 8.Which increase following possibilities：The
One belt 1B and the second belt 2B tire width direction end 8 and the rubber point near the tire width direction end 8
From；And the durability of Pneumatic tire for heavy load reduces.
For these reasons, the preferably width W1 of the first belt 1B and the second belt 2B on tire width direction W
In the range of the 34% to 63% of ground width TW.This width can more improve weight while tire shape is kept
Carry the durability with pneumatic tire 1.
Additionally, it is preferred that cord 9c, 9d included in the 3rd belt 3B and the 4th belt 4B are with 18 ° to 35 ° of model
Angle in enclosing tilts to equatorial plane CL.
In cord 9c, 9d included in the 3rd belt 3B and the 4th belt 4B with the angle less than 18 ° to tire
In the case of equatorial plane CL is inclined, cord 9c, 9d are too small to the inclined angles of equatorial plane CL.This too small angle of inclination
By the stress transfer to be born during tire load-bearing rotation to the first belt 1B and the second belt 2B, and make excessive stress collection
In on the first belt 1B and the second belt 2B tire width direction end 8.Which increase following possibilities：Tire is wide
Degree direction end 8 separates with the rubber near the tire width direction end 8；And the durability drop of Pneumatic tire for heavy load 1
It is low.
On the other hand, in cord 9c, 9d included in the 3rd belt 3B and the 4th belt 4B with the angle more than 35 °
Spend to equatorial plane CL it is inclined in the case of, during tire load-bearing rotation the stress to be born be transferred to the first belt 1B and
Second belt 2B, and excessive stress concentration is in the first belt 1B and the second belt 2B tire width direction end
On 8.Which increase following possibilities：Tire width direction end 8 separates with the rubber near the tire width direction end 8；
And the durability of Pneumatic tire for heavy load 1 reduces.
For these reasons, cord 9c, the 9d preferably being contained in the 3rd belt 3B and the 4th belt 4B with 18 ° extremely
Angle in the range of 35 ° tilts to equatorial plane CL.Such angle of inclination can more improve heavy duty pneumatic wheel
The durability of tire 1.
Furthermore it is preferred that width W2s of the 3rd belt 3B on tire width direction W ground width TW 75% to
In the range of 100%.
In the case where width W2s of the 3rd belt 3B on tire width direction W is less than the 75% of ground width TW,
The region for placing the 3rd belt 3B is too small.Placing the 3rd belt 3B region too small makes what is born during tire load-bearing rotation
Stress transfer makes excessive stress concentration in the first belt 1B and second to the first belt 1B and the second belt 2B
On belt 2B tire width direction end 8.Which increase following possibilities：Tire width direction end 8 and the tire are wide
The rubber separation spent near direction end 8；And the durability of Pneumatic tire for heavy load 1 reduces.
On the other hand, the width W2 in the 3rd belt 3B on tire width direction W is more than the 100% of ground width TW
In the case of, although when tire grinds out-of-date 3rd belt 3B while load-bearing rotation from thrust (such as stone) can
The entrance power from thrust is reasonably resistant to, but the shear strain in the 3rd belt 3B is too big.In 3rd belt 3B
Too big shear strain add following possibilities：Near tire width direction end 8 and the tire width direction end 8
Rubber separates；And the durability of Pneumatic tire for heavy load 1 reduces.
For these reasons, width W2s of preferably the 3rd belt 3B on tire width direction W is ground width TW's
In the range of 75% to 100%.Such width can improve anti-cut performance while resistant to separation hydraulic performance decline is suppressed.
It should be noted that it is preferred that there is width W2 of the 3rd belt 3B on tire width direction W enough width (to connect
Ground width TW 100% width) because thrust (for example, stone) is possible to be ground by whole tyre surface earthed surface 5a.So
And the 3rd belt 3B must not necessarily cover tyre surface earthed surface 5a ground end, because tyre surface earthed surface 5a's
Ground end grinds out-of-date from thrust, and thrust is possible to outwards dish out on tire width direction W.
Pay attention to, it is however generally that, it is adjacent to each other every on tire radial direction R in the band beam portion 7 with layer structure
Two belts are each arranged to tilt to tire equator surface C L in the opposite direction.In other words, common practices be will be multiple
Belt successively stacks, and makes the cord in each two belt adjacent to each other on tire radial direction R intersected with each other.
Because：No matter Pneumatic tire for heavy load 1 ground from thrust (such as stone) in which direction, this
Stacking method can prevent Pneumatic tire for heavy load 1 from being destroyed by entrance power in this direction；And the stacking method can be with
Improve rigidity of the Pneumatic tire for heavy load 1 on tire circumferential direction C.
In this respect, found by conscientious research, inventor：It is included in adjacent to each other more on tire radial direction R
In the tire of individual (more than five) belt, even if one of belt with other belts by not intersecting to be defined as
During dedicated for different performance, rigidity of the tire on tire circumferential direction C can also be ensured using other belts.
In view of this discovery, in the present embodiment, band beam portion 7 are designed to include：Cross-level laminate 7A, in each friendship
Pitch in layered product 7A, the bearing of trend of the cord on tire radial direction R in belt adjacent to each other is intersected with each other；And
Parallel layered product 7B, wherein the bearing of trend of cord in belt adjacent to each other on tire radial direction R is each other substantially
It is parallel.
Specifically, the bearing of trend of wherein cord each cross-level laminate 7A intersected with each other by following by combining
And formed：First belt 1B and the second belt 2B；Second belt 2B and the 3rd belt 3B；3rd belt 3B and
Four belt 4B；And the 5th belt 5B and the 6th belt 6B.
On the other hand, the bearing of trend of wherein cord parallel layered product 7B substantially parallel to one another is by by the 4th belt
4B combines and formed with the 5th belt 5B.
In this respect, above tyre surface earthed surface 5a, the belt discussed on tire radial direction R that
This is disposed adjacent and the cord of less than 5 in an embedded belt is handed over every cord in another embedded belt
In the range of fork, the bearing of trend of cord is substantially parallel to one another to be defined as a kind of state.
In other words, in the present embodiment, the 4th belt 4B and the 5th belt 5B heaps on tire radial direction R
It is folded so that in the cord of less than five and embedded 5th belt 5B in more cord 9d in embedded 4th belt 4B
Every cord 9e intersects.
In the present embodiment, n=6, wherein n represent to be included in the total quantity with the belt in beam portion 7.In addition, i=
4, wherein i represent to put down when counting for the belt 1B-6B in beam portion 7 since inner side on tire radial direction R
The sequence number of inner side positioning belt between row layered product 7B belt 4B, 5B, because in the present embodiment, the 4th band beam
Layer 4B is inner side positioning belts of the parallel layered product 7B on tire radial direction R.
Due to this reason, in the present embodiment, set in a manner of the relation that parallel layered product 7B is represented by meeting i >=n/2
Put in band beam portion 7.In other words, parallel layered product 7B is arranged on by being laminated the layer of multiple stackings to be formed with beam portion 7
In Outboard Sections on tire radial direction R.
In addition, in the present embodiment, as described above, the cord 9d of cord diameter maximum is embedded in the 4th belt 4B.
Therefore, the 4th belt 4B in parallel layered product 7B is most thick belt, and the cord that it includes is on cord diameter than it
Any other cord that his belt includes is bigger.On the other hand, the minimum cord 9e of cord diameter is embedded in the 5th belt
In 5B.Therefore, the 5th belt is most thin belt.
Therefore, at least one band beam in the belt (the 4th belt 4B and the 5th belt 5B) in parallel layered product 7B
Layer (the 4th belt 4B) is most thick belt, and its cord included is appointed on cord diameter than what other belts included
What his cord is bigger.Meanwhile it is not in the belt (the 4th belt 4B and the 5th belt 5B) in parallel layered product 7B
The belt (the 5th belt 5B) of most thick belt (the 4th belt 4B) be most thin belt (including cord ratio most
The thinner belt of cord that thick belt includes).
In this respect, as described above, compared with the 5th belt 5B, the 4th belt 4B is upper in tire radial direction R
In the inner side of tire.Therefore, in the parallel layered product 7B of present embodiment it is belt, be located on tire radial direction R
Belt (the 4th belt 4B) on the inside of tire is belt most thick in tire, and the parallel layered product 7B of present embodiment
In it is belt, on tire radial direction R positioned at tire outside belt (the 5th belt 5B) be in tire most
Thin belt (including the cord belt thinner than the cord that most thick belt includes).
In addition, in parallel layered product 7B it is belt (the 4th belt 4B and the 5th belt 5B), in tyre width
The width W3 that wider belt (the 5th belt 5B) has on tire width direction W on the W of direction is substantially equal to the 3rd band
Width W2s of the beam layer 3B on tire width direction W, as depicted in figs. 1 and 2.
Therefore, in parallel layered product 7B it is belt (the 4th belt 4B and the 5th belt 5B), in tyre width
Width W3 of the wider belt (the 5th belt 5B) on tire width direction W is also wide for the ground connection of fetus face 5 on the W of direction
More than the 75% of TW is spent, but below 100%.
In this respect, when the width of belt is different from each other, the width W3 on tire width direction W is included in parallel
In multiple (two) belts (being in the present embodiment the 4th belt 4B and the 5th belt 5B) in layered product 7B compared with
Width of the wide belt on tire width direction W.Due to this reason, in the case of similar to present embodiment, the 4th
Belt 4B and the 5th belt 5B is collectively forming parallel layered product 7B, and the 5th belt 5B is than the 4th belt 4B more
Width, width of the 5th belt 5B on tire width direction W are wide in tire in two belts in parallel layered product 7B
Spend width W3 of the belt wider on the W of direction on tire width direction W.
Preferably, as above-mentioned 3rd belt 3B, width W3s of the 5th belt 5B on tire width direction W
With enough width (close to ground width TW 100% width), because thrust (for example, stone) is possible to whole
Tyre surface earthed surface 5a ground.However, when tyre surface earthed surface 5a ground end ground thrust, thrust it is also possible to
Outwards dished out on tire width direction W.Due to this reason, the 5th belt 5B must not necessarily cover tyre surface earthed surface 5a
Ground end.In view of this, width W3s of preferably the 5th belt 5B on tire width direction W is also connecing for fetus face 5
More than the 75% of ground width TW, but below 100%.
As described above, Pneumatic tire for heavy load 1 includes at least one carcass 6, it is in each self-embedding a pair of bead portion 3
Ring-type extends between bead core 2.
Pneumatic tire for heavy load 1 also includes positioned at the band beam portion 7 in the outside of carcass 6 on tire radial direction R, and passes through
At least five belt (the first to the 6th belt 1B-6B) is successively stacked on tire radial direction R and forms band beam portion 7.Band beam
Layer is formed each via covering more cord 9a-9f with rubber.
Band beam portion 7 includes：Cross-level laminate 7A, in each cross-level laminate 7A on tire radial direction R phase each other
The bearing of trend of cord in adjacent belt is intersected with each other；And parallel layered product 7B, wherein on tire radial direction R that
The bearing of trend of cord in this adjacent belt is substantially parallel to one another.
Because parallel layered product 7B is formed like this, i.e., the curtain in belt adjacent to each other on tire radial direction R
The bearing of trend of line is substantially parallel to one another, therefore when can obtain the doubled in density with the cord in embedded each belt substantially
Identical anti-cut performance.Further, since the density for the cord that need not make to be embedded in one belt becomes big, therefore also
Separating resistance energy can be ensured.Therefore, present embodiment can be such that anti-cut performance and anti-band beam separating property realizes
Further improve.In this case, the rigidity on tire circumferential direction C can be filled by cross-level laminate 7A presence
Code insurance is demonstrate,proved.
In addition, be arranged in a manner of the relation that parallel layered product 7B is represented by meeting i >=n/2 (4 >=3) in band beam portion 7, its
In：N represents to be included in the total quantity (in the present embodiment, n=6) with the belt in beam portion 7；And i is represented in tire
Parallel layered product 7B band beam when being counted on radial direction R since inner side for the belt 1B to 6B in beam portion 7
Sequence number between layer 4B, 5B on tire radial direction R positioned at the inner side of inner side positioning belt (the 4th belt 4B) is (at this
In embodiment, i=4).In other words, parallel layered product 7B be arranged on by the layer for being laminated multiple stackings formed with beam portion 7
In outside portion (exceeding middle outside portion) on tire radial direction R.
This allows Pneumatic tire for heavy load 1 to stop thrust (such as stone) by outer layer as far as possible, therefore more
Ground improves the durability of Pneumatic tire for heavy load 1.
In addition, in the present embodiment, parallel layered product 7B belt (the 4th belt 4B and the 5th belt 5B)
In at least one belt (the 4th belt 4B) be thickest layer, its cord included is on cord diameter than other belts
Any other cord included is bigger.
This can improve the anti-cut performance for larger thrust.
In addition, the belt (the in belt in parallel layered product 7B on tire radial direction R on the inside of tire
Four belt 4B) it is belt most thick in tire, and it is upper in tire radial direction R in the belt in parallel layered product 7B
Belt (the 5th belt 5B) on the outside of tire be belt most thin in tire (including cord than most thick belt
The thinner belt of the cord that includes).
This can more effectively be stopped less by the outside belt (the 5th belt 5B) on tire radial direction R
Thrust, because the outside belt (the 5th belt 5B) on tire radial direction R uses the less cord 9e of cord diameter
Formed.On the other hand, can more effectively be stopped by the inside belt (the 4th belt 4B) on tire radial direction R compared with
Big thrust.Therefore, it can will stop that larger thrust enters the function of inside tires and stops less thrust
Function into inside tires is each assigned to parallel layered product 7B belt.
In addition, belt (the 5th belt) wider on tire width direction W in parallel layered product 7B belt
Width W3 on tire width direction W is more than the 75% of the ground width TW of fetus face 5, but below 100%.
This can more effectively stop that thrust enters inside tires.
(second embodiment)
The Pneumatic tire for heavy load 10 of present embodiment has base with the Pneumatic tire for heavy load 1 shown in first embodiment
This identical constructs.In other words, as shown in figure 3, the Pneumatic tire for heavy load 10 in present embodiment includes：Bead part 3；From tire
The side of sidewall portion 4 that circle portion 3 continues；And the fetus face 5 continued from side of sidewall portion 4.
Pneumatic tire for heavy load 10 also includes at least one carcass 6, tire of the carcass in each self-embedding a pair of bead portion 3
Ring-type extends between enclosing core 2.
The outside of carcass 6 is arranged on tire radial direction R with beam portion 7.Band beam portion 7 is included in tire radial direction R
On at least five belts that successively stack, and each belt covers more cords by using rubber and is made.The band beam portion 7
By successively stacking at least five belts (the first to the 6th belt 1B to 6B) formation on tire radial direction R, and
Each belt extends on tire circumferential direction C.Belt (the first to the 6th belt 1B-6B) is covered by each personal rubber
More cord 9a, more cord 9b, more cord 9c, more cord 9d, more cord 9e and Duo Gen cord 9f are covered to be formed.
In the present embodiment, similarly, as described above, by stacking six belts, i.e. in order in tire radial direction
The first belt 1B, the second belt 2B, the 3rd belt 3B, the 4th belt 4B, the 5th belt are stacked on R from inside to outside
5B and the 6th belt 6B and form band beam portion 7.
In addition, in each belt 3B of self-embedding the 3rd and the 4th belt 4B of cord 9c, 9d of cord diameter maximum.Cause
This, the 3rd belt 3B and the 4th belt 4B are that the cord included is more any than what other belts included on cord diameter
The bigger most thick belt of other cords.
In addition, in cord 9e, 9f insertion the 5th belt 5B and the 6th belt 6B of cord diameter minimum.Therefore,
Five belt 5B and the 6th belt 6B are most thin belts.
In addition, in cord 9a, 9b insertion the first belt 1B and the second belt 2B with medium cord diameter.Cause
This, the first belt 1B and the second belt 2B are the belts of intermediate gauge.
Band beam portion 7 also includes：Cross-level laminate 7A, in each cross-level laminate 7A, on tire radial direction R each other
The bearing of trend of cord in adjacent belt is intersected with each other；And parallel layered product 7B, wherein on tire radial direction R
The bearing of trend of cord in belt adjacent to each other is substantially parallel to one another.
In this respect, the Pneumatic tire for heavy load 10 of present embodiment and the heavy duty pneumatic shown in first embodiment
The difference of tire 1 is that the belt in parallel layered product 7B is only formed by most thick belt.
Specifically, the bearing of trend of cord each cross-level laminate 7A intersected with each other by following by combining and shape
Into：First belt 1B and the second belt 2B；Second belt 2B and the 3rd belt 3B；4th belt 4B and the 5th band
Beam layer 5B；And the 5th belt 5B and the 6th belt 6B.
On the other hand, the bearing of trend of cord parallel layered product 7B substantially parallel to one another by by the 3rd belt 3B with
4th belt 4B combines and formed.
In this case, the relation that i >=n/2 (3 >=3) is represented is met, wherein：N represents to be included in the band in beam portion 7
The total quantity (in the present embodiment, n=6) of beam layer；And i represent on tire radial direction R since inner side for comprising
When the belt 1B-6B in beam portion 7 is counted between parallel layered product 7B belt 3B, 4B on tire radial direction R
Positioned at the sequence number (in the present embodiment, i=3) of the inner side of inner side positioning belt (the 3rd belt 3B).
In addition, two belts included in parallel layered product 7B by be most thick belt the 3rd belt 3B
Formed with the 4th belt 4B.Therefore, two belts included in parallel layered product 2B are all most thick belts.
In addition, belt wider on tire width direction W in parallel layered product 7B two belts is wide in tire
The width W3 spent on the W of direction is more than the 75% of the ground width TW of fetus face 5, but below 100%.
In this respect, when the width of belt is different from each other, the width W3 on tire width direction W is included in flat
In multiple (two) belts (being in the present embodiment the 3rd belt 3B and the 4th belt 4B) in row layered product 7B
Width of the wider belt on tire width direction W.Due to this reason, in the case of similar to present embodiment,
Three belt 3B and the 4th belt 4B are collectively forming parallel layered product 7B, and the 3rd belt 3B is than the 4th belt 4B more
Width, width of the 3rd belt 3B on tire width direction W are wide in tire in two belts in parallel layered product 7B
Spend width W3 of the belt wider on the W of direction on tire width direction W.
As described above, in the present embodiment, it is wider on tire width direction W in the belt in parallel layered product 7B
Width W3 width W2 with threeth belt 3B on tire width direction W of the belt on tire width direction W it is consistent.
Above-mentioned embodiment can produce and the effect of first embodiment identical and effect.
In addition, in the present embodiment, the belt in parallel layered product 7B is only made up of most thick belt.This can be with
Obtain roughly the same when cord density embedded in the most thick belt with each can effectively stop big thrust doubles
Anti-cut performance.Therefore, anti-cut performance can further be improved.
(the 3rd embodiment)
Pneumatic tire for heavy load 100 in present embodiment has with the Pneumatic tire for heavy load 1 shown in first embodiment
There is essentially identical construction.In other words, as shown in Figure 4 and Figure 5, the Pneumatic tire for heavy load 100 in present embodiment includes：Tire
Circle portion 3；The side of sidewall portion 4 continued from bead part 3；And the fetus face 5 continued from side of sidewall portion 4.
Pneumatic tire for heavy load 100 also includes at least one carcass 6, its tyre bead in each self-embedding a pair of bead portion 3
Ring-type extends between core 2.
The outside of carcass 6 is arranged on tire radial direction R with beam portion 7.Band beam portion 7 is included in tire radial direction R
On at least five belts that successively stack, and each belt covers more cords by using rubber and is made.
In this respect, the Pneumatic tire for heavy load 100 of present embodiment with the heavy duty that is shown in first embodiment with filling
The difference of air filled tyre 1 is that band beam portion 7 is made up of five belts (at least five belts).
Specifically, band beam portion 7 on tire radial direction R by successively stacking five belts (the first to the 5th band beam
Layer 1B to 5B) form, and each belt extends on tire circumferential direction C.In addition, belt (the first to the 5th band beam
Layer 1B-5B) more cord 9a, more cord 9b, more cord 9c, more cord 9d, more curtains are each covered by using rubber
Line 9e is formed.
In the present embodiment, as described above, by stack five belts, i.e. on tire radial direction R by it is interior to
Outer stacking the first belt 1B, the second belt 2B, the 3rd belt 3B, the 4th belt 4B and the 5th belt 5B and formed
Band beam portion 7.
In addition, in each belt 3B of self-embedding the 3rd and the 4th belt 4B of cord 9c, 9d of cord diameter maximum.Cause
This, the 3rd belt 3B and the 4th belt 4B are most thick belts.
In addition, the cord 9e of cord diameter minimum is embedded in the 5th belt 5B.Therefore, the 5th belt 5B is most thin
Belt.
In addition, in cord 9a, 9b insertion the first belt 1B and the second belt 2B with medium cord diameter.Cause
This, the first belt 1B and the belt that the second belt 2B is intermediate gauge.
Band beam portion 7 also includes：Cross-level laminate 7A, in each cross-level laminate 7A, on tire radial direction R each other
The bearing of trend of cord in adjacent belt is intersected with each other；And parallel layered product 7B, wherein on tire radial direction R
The bearing of trend of cord in belt adjacent to each other is substantially parallel to one another.
Specifically, the bearing of trend of cord each cross-level laminate 7A intersected with each other by following by combining and shape
Into：First belt 1B and the second belt 2B；Second belt 2B and the 3rd belt 3B；And the 3rd belt 3B and
Four belt 4B.
On the other hand, the bearing of trend of cord parallel layered product 7B substantially parallel to one another by by the 4th belt 4B with
5th belt 5B combines and formed.
In this case, the relation that i >=n/2 (4 >=2.5) is represented is met, wherein：N represents to be included in in beam portion 7
The total quantity (in the present embodiment, n=5) of belt；And i represents that on tire radial direction R be bag since inner side
Be contained in in beam portion 7 belt 1B-5B count when parallel layered product 7B belt 4B, 5B between in tire radial direction R
The upper sequence number (in the present embodiment, i=4) positioned at the inner side of inner side positioning belt (the 4th belt 4B).
In addition, in the present embodiment, as described above, the cord 9d of cord diameter maximum is embedded in the 4th belt 4B,
And the 4th belt 4B is that the cord included is bigger than any other cord that other belts include on cord diameter
Most thick belt.On the other hand, the minimum cord 9e of cord diameter is embedded in the 5th belt 5B, and the 5th belt
5B is most thin belt.
Therefore, at least one in two belts (the 4th belt 4B and the 5th belt 5B) in parallel layered product 7B
Individual belt (the 4th belt 4B) is most thick belt.Meanwhile two belts (the 4th band beam in parallel layered product 7B
Layer 4B and the 5th belt 5B) in be not that the belt (the 5th belt 5B) of most thick belt (the 4th belt 4B) is most
Thin belt (including the cord belt thinner than the cord that most thick belt includes).
In this respect, equally in the present embodiment, compared with the 5th belt 5B, the 4th belt 4B is in tire radial direction
It is located at the inner side of tire on the R of direction.Therefore, in tire radial direction in the belt in the parallel layered product 7B of present embodiment
Belt (the 4th belt 4B) on R on the inside of tire is belt most thick in tire, and present embodiment is parallel
Belt (the 5th belt 5B) in belt in layered product 7B on tire radial direction R on the outside of tire is tire
In most thin belt (including the cord belt thinner than the cord that most thick belt includes).
In addition, in tyre width side in belt (the 4th belt 4B and the 5th belt 5B) in parallel layered product 7B
The width W3 that wider belt (the 5th belt 5B) has on tire width direction W on to W is substantially equal to the 3rd band beam
Width W2s of the layer 3B on tire belt width W, as shown in Figure 4 and Figure 5.
Therefore, it is wide in tire in two belts (the 4th belt 4B and the 5th belt 5B) in parallel layered product 7B
Spend the ground connection that width W3 of the belt (the 5th belt 5B) wider on the W of direction on tire width direction W is also fetus face 5
More than the 75% of width TW, but below 100%.
In this respect, when the width of belt is different from each other, the width W3 on tire width direction W is included in flat
In multiple (two) belts (being in the present embodiment the 4th belt 4B and the 5th belt 5B) in row layered product 7B
Width of the wider belt on tire width direction W.Due to this reason, in the case of similar to present embodiment,
Four belt 4B and the 5th belt 5B are collectively forming parallel layered product 7B, and the 5th belt 5B is than the 4th belt 4B more
Width, width of the 5th belt 5B on tire width direction W are in tyre width side in the belt in parallel layered product 7B
Width W3 of the wider belt edge on tire width W on to W.
Above-mentioned embodiment can produce and the effect of first embodiment identical and effect.
It should be noted that：Aforementioned embodiments illustrate only the example of the present invention；And the construction of embodiment respectively can
To be combined together, and various modifications can be carried out, as long as this combination and modification are without departing substantially from purport of the invention.
For example, although foregoing each embodiment shows that the cord included in belt is each with linearly extended
The example of cord, but the cord can be a series of cord in waves or zigzag extension.
In addition, although the first and second embodiments are shown forms band beam portion 7 simultaneously by successively stacking six belts
And it is arranged in a manner of the relations that are represented by meeting i >=n/2 of parallel layered product 7B with the example in beam portion 7, but by successively
What six belts of stacking were formed can be by the 5th belt 5B and the 6th belt 6B shapes with the parallel layered product 7B in beam portion 7
Into.Also meet what i >=n/2 was represented by the 5th belt 5B and the 6th belt the 6B parallel layered product 7B formed by this way
Relation.
Although in addition, the 3rd embodiment is shown forms band beam portions 7 and parallel by successively stacking five belts
It is arranged in a manner of the relation that layered product 7B is represented by meeting i >=n/2 with the example in beam portion 7, but by successively stacking five
What individual belt was formed can be formed with the parallel layered product 7B in beam portion 7 by the 3rd belt 3B and the 4th belt 4B.By
The parallel layered product 7B that 3rd belt 3B and the 4th belt 4B are formed by this way also meets the pass represented with i >=n/2
System.
In addition, the quantity of the belt in beam portion 7 can be more than 7.However, when the quantity of belt is
At more than 7, fetus face is too thick and heat dispersion is possible to even worse.Due to this reason, it preferably is contained in the band in beam portion 7
The quantity of beam layer is 5 or 6.
In addition, parallel layered product 7B can be formed by more than 3 belts.However, parallel layered product 7B by 3 with
On belt formed simultaneously included in the case that the quantity with the belt in beam portion 7 is 5 or 6, it is circumferential in tire
Rigidity on the C of direction is possible to be lowered.Due to this reason, adjacent to each other two preferably only on tire radial direction R
Belt is substantially parallel to one another.
Next, it will thus provide the description to applying embodiments of the invention.It should be noted that the present invention is not limited to following realities
Apply example.
Embodiment
In order to examine the effect of the Pneumatic tire for heavy load of the present invention, following measurements have been carried out.
First, tentatively production includes Pneumatic tire for heavy load (conventional example tire 1), the conventional example wheel in conventional belt beam portion
The comparative example tire (comparative example tire 1,2) and each include applying this that the cord diameter of tire 1 or embedded density are changed
The Pneumatic tire for heavy load (embodiment tire 1,2) with beam portion of invention.
The tire size of the Pneumatic tire for heavy load prepared for the experiment is 53/80R63.
In addition, (in table 1, used from inside to outside on tire radial direction R with beam for 6 with the quantity with beam in beam portion
Reference 1B to 6B is represented).
In addition, the rim size for installing the wheel rim of corresponding Pneumatic tire for heavy load is 36.00 × 5.0.
Moreover, the cord diameter and cord insertion density each with cord in beam with them and correspond to conventional example tire 1
The cord diameter of cord compares the index table calculated with the corresponding a reference value 100 of cord insertion density in middle belt 4B
Show.
For each experiment tire, size is arranged on to be obtained on 36.00 × 5.0 wheel rim by using tire will be tested
Tire wheel and evaluate durability from following viewpoints.
<For the evaluation of the anti-cut performance of sharp thrust entrance power>
For each in conventional example tire 1, comparative example tire 1,2 and embodiment tire 1,2, by using TRA
Tire is arranged on rear positions to prepare 10 tires by the standard internal pressure and standard rim that (the Tire and Rim Association, Inc.) limits, and
And them are made to be run under identical use condition (travel route, travel speed and 80 tons of tyre load).Thus, measurement row
Sail time span, until 5 in 10 tires caused by the entrance power of sharp thrust tyre surface otch and become can not
Use again.The performance of conventional example tire 1, comparative example tire 1,2 and embodiment tire 1,2 uses index assessment.
Table 1 shows evaluation result.Subsidiary one carries, and the numerical value in table is and the traveling duration corresponding to conventional example tire 1
The index compared of a reference value 100.Numerical value is bigger to represent that traveling duration is longer, as a result better.
<The evaluation of separating resistance energy>
On tire wheel to be placed on to the drum tester that roller diameter is 7 meters, that will be based on TRA, (tyre rim will be assisted
Meeting) 150% load (1223.8kN) of yearbook put under conditions of tire wheel with relevant with travel speed (8km/h)
Whether rotary speed uses capture apparatus 240 hours while rotating tire wheel, by checking the shape of fetus face because of band beam
Layer 1B, 2B and belt 1B, 2B near rubber between separation and change to evaluate conventional example tire 1, comparative example wheel
Each experiment tire in tire 1,2 and embodiment tire 1,2.
Table 1 shows evaluation result.Subsidiary one carries, and evaluates conventional example tire 1, comparative example using index in the following manner
The performance of tire 1,2 and embodiment tire 1,2：100 represent that the shape of fetus face does not change after 240 hours；And
And in the case where the shape of fetus face changed before 240 hours, will change occur before institute through duration calculation be with
100 values compared.In this respect, in the upper limit 100, larger numerical value means that tire has preferable durability.It will be equal to
Or the tire that represents of numerical value (equivalent to 204 more than hour) more than 85 be evaluated as that there is flat road surface fully improve it is resistance to
Long property, therefore can sell.
Table 1
| Conventional example 1 | Comparative example 1 | Comparative example 2 | Embodiment 1 | Embodiment 2 | |
| 1B angles | R5 | R5 | R5 | R5 | R5 |
| 2B angles | L5 | L5 | L5 | L5 | L5 |
| 3B angles | R18 | R18 | R18 | R18 | R18 |
| 4B angles | L18 | L18 | L18 | L18 | L18 |
| 5B angles | R18 | R18 | R18 | L18 | L18 |
| 6B angles | L18 | L18 | L18 | R18 | R18 |
| 1B is embedded in | 240 | 240 | 240 | 240 | 240 |
| 2B is embedded in | 240 | 240 | 240 | 240 | 240 |
| 3B is embedded in | 100 | 100 | 100 | 100 | 100 |
| 4B is embedded in | 100 | 150 | 100 | 100 | 100 |
| 5B is embedded in | 280 | 280 | 280 | 280 | 280 |
| 6B is embedded in | 280 | 280 | 280 | 280 | 280 |
| 1B cord diameters | 69 | 69 | 69 | 69 | 69 |
| 2B cord diameters | 69 | 69 | 69 | 69 | 69 |
| 3B cord diameters | 100 | 100 | 100 | 100 | 100 |
| 4B cord diameters | 100 | 100 | 122 | 100 | 100 |
| 5B cord diameters | 35 | 35 | 35 | 35 | 35 |
| 6B cord diameters | 35 | 35 | 35 | 35 | 35 |
| 1B width/ground width | 0.47 | 0.47 | 0.47 | 0.47 | 0.47 |
| 2B width/ground width | 0.43 | 0.43 | 0.43 | 0.43 | 0.43 |
| 3B width/ground width | 0.76 | 0.76 | 0.76 | 0.76 | 0.76 |
| 4B width/ground width | 0.67 | 0.67 | 0.67 | 0.67 | 0.67 |
| 5B width/ground width | 0.87 | 0.87 | 0.87 | 0.87 | 0.87 |
| 6B width/ground width | 0.75 | 0.75 | 0.75 | 0.75 | 0.75 |
| Anti-cut performance | 100 | 110 | 110 | 120 | 130 |
| Separating resistance energy | 100 | 70 | 80 | 100 | 95 |
Comparative example 1 represents the example for changing cord insertion density, and comparative example 2 represents the example for changing cord diameter.
As shown in table 1, it was confirmed that although the anti-cut performance of comparative example 1,2 is obtained for raising, their resistant to separation characteristic is but
It is deteriorated.Subsidiary one carries, although the cord insertion density or the example of cord diameter that are shown here as changing in belt 4B,
But it observed similar trend when changing the insertion density of the cord in any other layer or cord diameter.
In the example that embodiment 1 represents：Outside positioning belt of the parallel layered product in tire in the radial direction is wherein
The belt of the less cord of cord diameter is embedded with by big insertion density；And parallel layered product is in tire radial direction
On inner side positioning belt be that the belt of the larger cord of cord diameter is wherein embedded with by big insertion density.Such as table
Shown in 1, it was confirmed that separating resistance can be maintained at roughly the same level in embodiment 1, while improving anti-cut
Energy.
Meanwhile two layers of each freedom of parallel layered product is wherein embedded with cord diameter maximum in the example of the representative of embodiment 2
Cord belt form.As shown in table 1, it was confirmed that separating resistance can slightly be deteriorated in example 2, but anti-cut
Can largely it be improved.Subsidiary one is carried, and the tire of embodiment 2 can also be sold, because while separating resistance can omit
Micro- variation, but the evaluation of separating resistance energy is represented with numerical value 95 (more than 85).
As described above, it was confirmed that in the tire of embodiment 1,2, realized in anti-cut performance and anti-band beam separating property
On obtained further improvement.
Next, it is included in examine with the quantity with beam in beam portion as 5 (in table 2, with beam in tire radial direction
Represented from inside to outside with reference 1B to 5B on the R of direction) each Pneumatic tire for heavy load effect, carried out following surveys
Amount.
Specifically, Pneumatic tire for heavy load (conventional example tire 2) and bag including conventional belt beam portion are tentatively produced
Include the Pneumatic tire for heavy load (embodiment tire 3) with beam portion using the present invention.
The tire size of the Pneumatic tire for heavy load prepared for the experiment is also 53/80R63.
In addition, the rim size for installing the wheel rim of corresponding Pneumatic tire for heavy load is also 36.00 × 5.0.
Moreover, the cord diameter and cord insertion density each with cord in beam with them and correspond to conventional example tire 2
The cord diameter of cord compares the index table calculated with the corresponding a reference value 100 of cord insertion density in middle belt 4B
Show.
For each experiment tire, size is arranged on to be obtained on 36.00 × 5.0 wheel rim by using tire will be tested
Tire wheel, evaluate durability from following viewpoints.
Specifically, using with to contain the quantity with beam in beam portion be 6 each Pneumatic tire for heavy load phase
Same method is carried out<For the evaluation of the anti-cut performance of sharp thrust entrance power>With<The evaluation of separating resistance energy>.
Table 2 shows evaluation result.The reading manner of table 2 can be identical with table 1.
Table 2
| Conventional example 2 | Embodiment 3 | |
| 1B angles | R5 | R5 |
| 2B angles | L5 | L5 |
| 3B angles | R18 | R18 |
| 4B angles | L18 | L18 |
| 5B angles | R18 | L18 |
| 1B is embedded in | 240 | 240 |
| 2B is embedded in | 240 | 240 |
| 3B is embedded in | 100 | 100 |
| 4B is embedded in | 100 | 100 |
| 5B is embedded in | 280 | 200 |
| 1B cord diameters | 69 | 69 |
| 2B cord diameters | 69 | 69 |
| 3B cord diameters | 100 | 100 |
| 4B cord diameters | 100 | 100 |
| 5B cord diameters | 35 | 52 |
| 1B width/ground width | 0.47 | 0.5 |
| 2B width/ground width | 0.43 | 0.46 |
| 3B width/ground width | 0.76 | 0.8 |
| 4B width/ground width | 0.67 | 0.71 |
| 5B width/ground width | 0.87 | 0.89 |
| Anti-cut performance | 100 | 122 |
| Separating resistance energy | 100 | 97 |
In the example that embodiment 3 represents：Outside positioning belt of the parallel layered product in tire in the radial direction is wherein
The belt of the less cord of cord diameter is embedded with by big insertion density；And parallel layered product is in tire radial direction
On inner side positioning belt be that the belt of the larger cord of cord diameter is wherein embedded with by big insertion density.Such as table
Shown in 2, it was confirmed that separating resistance can be slightly deteriorated in embodiment 3, but anti-cut performance is largely carried
It is high.Subsidiary one is carried, and the tire of embodiment 3 can also be sold, because while separating resistance can slightly be deteriorated, but separating resistance energy
Evaluation is represented with numerical value 97 (more than 85).
As described above, it was confirmed that in the tire of embodiment 3, realized in anti-cut performance and anti-band beam separating property
Further improvement is obtained.
This application claims the priority based on the Japanese patent application submitted on March 9th, 2015 the 2015-045781st,
The entire disclosure of which is incorporated herein by reference.
Industrial usability
The present invention can obtain make anti-cut performance and anti-band beam separating property realize can be further improved
Pneumatic tire for heavy load.
Reference numerals list
1,10,100 Pneumatic tire for heavy load
5 fetus faces
7 band beam portions
7A cross-level laminates
The parallel layered products of 7B
1B is to 6B belts
3B, 4B most thick belt
9a is to 9f cords
C tire circumferential directions
R tire radial directions
W tire width directions
The W3 width of broader belt on tire width direction on the tire width direction of parallel layered product
TW ground widths
Claims (5)
1. a kind of Pneumatic tire for heavy load, it includes：
At least one carcass, ring-type extends between its bead core in each self-embedding a pair of bead portion；And
Band beam portion, it is arranged on the outside of carcass and is included in what tire successively stacked in the radial direction in the radial direction in tire
At least five belts, each belt cover more cords by using rubber and are made, wherein band beam portion includes：
Cross-level laminate, wherein the bearing of trend of the cord in tire in the radial direction belt adjacent to each other is handed over each other
Fork；And
Parallel layered product, wherein the bearing of trend of cord in tire in the radial direction belt adjacent to each other is each other substantially
It is parallel, and
It is arranged in a manner of the relation that parallel layered product is represented by meeting i >=n/2 in band beam portion, wherein n represents to be included in band beam
The total quantity of belt in portion, it is in the radial direction the belt in beam portion since inner side that i, which is represented in tire,
It is located at the sequence number of the belt of the inner side of tire in the radial direction during counting between the belt of parallel layered product.
2. Pneumatic tire for heavy load according to claim 1, wherein
Include cord diameter multiple belts different from each other with beam portion, and
At least one belt in parallel layered product is most thick belt, and the cord of the cord in the most thick belt is straight
Footpath is bigger than any other cord in other belts.
3. Pneumatic tire for heavy load according to claim 2, wherein
Belt in parallel layered product only includes most thick belt.
4. Pneumatic tire for heavy load according to claim 2, wherein
In belt in parallel layered product, in tire in the radial direction positioned at the belt of the inner side of Pneumatic tire for heavy load
It is most thick belt, and is to include in another belt of the tire in the radial direction positioned at the outside of Pneumatic tire for heavy load
The belt of the cord smaller than the cord diameter of the cord included in most thick belt.
5. Pneumatic tire for heavy load according to any one of claim 1 to 4, wherein
The tire of belt in parallel layered product width of the broader belt on tire width direction in the radial direction
For more than the 75% of the ground width of tyre surface, but below 100%.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015045781A JP2016165924A (en) | 2015-03-09 | 2015-03-09 | Pneumatic tire for heavy load |
| JP2015-045781 | 2015-03-09 | ||
| PCT/JP2016/055980 WO2016143571A1 (en) | 2015-03-09 | 2016-02-29 | Heavy duty pneumatic tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107405954A true CN107405954A (en) | 2017-11-28 |
Family
ID=56880004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680014121.9A Pending CN107405954A (en) | 2015-03-09 | 2016-02-29 | Pneumatic tire for heavy load |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20180037064A1 (en) |
| EP (1) | EP3269563A4 (en) |
| JP (1) | JP2016165924A (en) |
| CN (1) | CN107405954A (en) |
| WO (1) | WO2016143571A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515813A (en) * | 2018-04-16 | 2018-09-11 | 中策橡胶集团有限公司 | A kind of low flat pneumatic radial tire of load-carrying |
| JP7072494B2 (en) * | 2018-12-14 | 2022-05-20 | 株式会社ブリヂストン | Pneumatic tires |
| US20210178817A1 (en) * | 2019-12-17 | 2021-06-17 | The Goodyear Tire & Rubber Company | Pneumatic tire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5261475A (en) * | 1990-12-18 | 1993-11-16 | Bridgestone Corporation | Off-the-road pneumatic steel radial tires |
| US20080110545A1 (en) * | 2005-01-28 | 2008-05-15 | Bridgestone Corporation | Radial Tire for Construction Vehicle |
| JP2009018629A (en) * | 2007-07-10 | 2009-01-29 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP2014121922A (en) * | 2012-12-20 | 2014-07-03 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| DE102013102430A1 (en) * | 2013-03-12 | 2014-09-18 | Continental Reifen Deutschland Gmbh | Vehicle tires |
| CN104369623A (en) * | 2014-08-27 | 2015-02-25 | 德轮橡胶股份有限公司 | All-steel truck radical tire |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4008013B1 (en) * | 2006-06-23 | 2007-11-14 | 横浜ゴム株式会社 | Pneumatic tire |
| JP4776455B2 (en) * | 2006-06-29 | 2011-09-21 | 株式会社ブリヂストン | Heavy duty pneumatic radial tire |
| US20090301627A1 (en) * | 2006-09-22 | 2009-12-10 | Akira Manno | Heavy duty radial tire |
| DE112012006993T5 (en) * | 2012-10-10 | 2015-06-18 | The Yokohama Rubber Co., Ltd. | tire |
| FR3020017B1 (en) * | 2014-04-22 | 2017-06-09 | Michelin & Cie | PNEUMATIC VEHICLE FOR CIVIL ENGINEERING |
-
2015
- 2015-03-09 JP JP2015045781A patent/JP2016165924A/en active Pending
-
2016
- 2016-02-29 EP EP16761541.8A patent/EP3269563A4/en not_active Withdrawn
- 2016-02-29 WO PCT/JP2016/055980 patent/WO2016143571A1/en active Application Filing
- 2016-02-29 US US15/555,462 patent/US20180037064A1/en not_active Abandoned
- 2016-02-29 CN CN201680014121.9A patent/CN107405954A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5261475A (en) * | 1990-12-18 | 1993-11-16 | Bridgestone Corporation | Off-the-road pneumatic steel radial tires |
| US20080110545A1 (en) * | 2005-01-28 | 2008-05-15 | Bridgestone Corporation | Radial Tire for Construction Vehicle |
| JP2009018629A (en) * | 2007-07-10 | 2009-01-29 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP2014121922A (en) * | 2012-12-20 | 2014-07-03 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| DE102013102430A1 (en) * | 2013-03-12 | 2014-09-18 | Continental Reifen Deutschland Gmbh | Vehicle tires |
| CN104369623A (en) * | 2014-08-27 | 2015-02-25 | 德轮橡胶股份有限公司 | All-steel truck radical tire |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180037064A1 (en) | 2018-02-08 |
| EP3269563A4 (en) | 2018-03-14 |
| WO2016143571A1 (en) | 2016-09-15 |
| JP2016165924A (en) | 2016-09-15 |
| EP3269563A1 (en) | 2018-01-17 |
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